Family name L'Italien (L'Italien 
) , all over the world, is a rare last name. The last name L'Italien is habitual in Canada, where it is quite a rare surname, New Zealand, where it is a rare surname, and Switzerland, where it is a very rare surname. In absolute terms, the name is most common in Canada, the United States, and France.
| VARIANT | COUNTRY |
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| L'Italien | Switzerland, United States, Canada, France, New Zealand |
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barbara l'italien American politician, US (b. 1961) |
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| jean l'italien Canadian actor, CA (b. 1958) |
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| françois l'italien sociologist and university professor, CA (b. 1975) |
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| isabelle l'italien-savard French-Canadian professor, CA |
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| rosaire l'italien The interim leader of the New Brunswick New Democratic Party in 2017 |
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